Regenerative furnace.



No. 867.105. PATENTED SEPT. 24, 1907. G. BRAUER & H. GEWEGKE. REGENERATIVE FURNACE.

APPLIOATIOR FILED JULY 31, 1906.

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- V PATENTED SEPT. 24, 1907. G. BRAUER'& H. GEWBGKE,

REGENBRATIVB FURNACE.

APPLICATION FILED JULY 31, 1906- 2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

GERHARD BRAUER, OF DUISBURG-BEEGK, AND HERMANN GEWEOKE, OF DARMSTADT,

GERMANY; SAID BRAUER ASSIGNOR TO SAID GEWEOKE.

REGENERATIVE FURNACE.

I Patented Sept. 24, 1907.

Application filed July 31, 1906. Serial No- 328,518-

To all whom it may concern:

Be it known that we, GERHARD BRAUER and HER- MANN GEwEcKE, both citizens of Germany, and residents, respectively, of Duisburg-Beeck and Darmstadt, Germany, have invented new and useful Improvements in Regenerative Furnaces, of which the following is a specification.

This invention relates to regenerative furnaces and more particularly to a reversing and regulating device for the same.

In this device, the valve boxes of which one is connected to the gas supply conduit and the other with the atmospheric air, are divided each into two chambers each of which is provided with three different channelsone for the air and gas inlet respectively, the other for the communication with the flue, and the third for the communication with the furnace chamber. Of these channels, not only the two first named but also the third can be closed and regulated by the closing mechanism which is so constructed and arranged that the respective series of valves are already closed or still closed when the other series of valves are reversed. The accompanying drawings show how this is accomplished.

Figure 1 is a vertical section through the gas chambers with the position of the valves at the gas supply to the left chamber and at the leading-off of the products of combustion into the right chamber, the actuating mechanism of the valves being partly shown in front view; Fig. 2 is a vertical section" on the line AB of Fig. 1, through the air and gas chambers; Fig. 3 is a diagrammatical plan as seen on the line E-F of Fig. 1, of the arrangement of the different channels from the furnace to the flue; Fig. 4 is a vertical section on the line OD of Fig. 1, through the air and gas chambers; Fig. 5 shows a modified construction of the 'valve actuating mechanism in front view, with the gas chambers in vertical section, and Fig. 6 is a side view of the upper part of Fig. 5.

The valve boxes I), b are divided into chambers a a by the partitions e. The bottom of these valve boxes is formed by the plates a in which the orifices of the channels at, x and y, y are formed as valve seats. The channels 90, x are connected with the chimney s, while channels y, y, of valve-box b, communicate with the air pockets o, of oven 0. Channels 3;, y of valve-box b communicate with the gas pockets w, of the oven. Upon plates a, water or sand may be placed as usual for sealing the valves absolutely right when closed.

Directly above the orifices of channels at, x the orifices of channels 2, z are arranged in the valve boxes also as valve seats. These channels serve in the chamber b for the supply of gas and in the other chamber b for the supply of air. Through these orifices of channels z, 2 the rods of the double valves 0, c are passed. The latter are so arranged that they move in the opposite direction, so that while the valve 0 closes the orifice of channel at the valve closes the orifice of channel z whereas when the valve 0 closes the orifice of channel z the valve 0 closes the orifice of channel x Directly above the orifices of channels y, y the valves d, d are arranged in the valve boxes, the rods of which pass through and beyond the valve boxes. All

these valves 0, c and d, d are actuated from the crank it which is mounted on the axle of a disk f, as shown in the example in Fig. 1. The actuation of the valves may, however, also be effected partly by a crank and partly by a hand lever which latter is in this case made dependent on the crank, as shown in the example in Fig. 5. Now by the following arrangement it is possible to effect a regular reversing and regulating of the valves in all the four chambers through the medium of the crank it alone: On the disk fa pin p is provided, while further cords or ropes g are connected to the disk f and guided over rollers r and adapted to actuate the valves d, d through the medium of a balance h and other cords or ropes g connected with the valve rods. Beneath the disk f double-armed levers q are mounted on an axle m, of which the arms are each connected with a valve 0, c for, the gas or air supply. respectively. The axle m carries further a fork it into which catches the pin p eventually when the disk f moves. This fork n can, as shown in Fig. 5, also be formed as a hand lever which is not'capable of perfect movement until the disk f is turned in the direction of the arrow shown in Fig. 5, so far back that the closing of valves d, d (and valve 0 to be mentioned hereinafter) is effected before the lever can be moved beneath the pin p.

Referring to Fig. 1, the crank k is in the position shown turned in the direction of the dotted arrow. By

means of the pin 19 and fork n the axle m was thereby turned in the opposite direction, so that the valves 0 v in the right chambers a were lifted and the valves 0 in the left chambers'a lowered. At the moment when the pin p has left the fork n, the valves 0 in the right chambers close the orifice of channels 2 and the valves 0 in the left chambers the orifice of channels at. closing position of the valves 0, c is maintained by the weight of the fork or lever n inclined to the left. The cords or ropes g which were loosely hanging in the intermediary position, were, after the pin p has left the fork n, so attracted that the simultaneous lifting of all the regulating valves (1, d was effected, When the crank 70 has arrived in its lowermost position, the valves d, d are entirely lifted whereupon the crank 70 is pre- This vented from further turning by its striking against an abutment provided for this purpose or, as in the examples shown, by the collars l provided at the top of the rods of the valves d, d abutting against the top wall of the valve boxes 17, b

The cords or ropes g are provided with abutments it eventually striking against the plate t on which the disk f is supported, when they become loose by the movement of the disk f.

By turning the crank it more or less, it is possible to lift the valves (1, d more or less from the orifices of channels y, y and thereby to regulate the supply of gas and air to the furnace as well as the escape of the products of combustion from the furnace to the flue, in

a common way and in the right proportions.

In the position of the valves shown in Figs. 1, 2 and 4, the gas, air and waste gases travel as follows: Gas flows through open channel 2, of valve-box 1;, into chamber a, and thence through channel y, into left gas pocket to, (Fig. 3), while air flows through open channel 2, of valve-box b, chamber a, and channel 1 into left air pocket 2). The waste gases of oven 0, enter right gas pocket 10, and right air pocket 1). From the former they flow through channel y chamber a of valve-box b and channel 00 into chimney .9, while from the air pocket 1), the waste gases flow through channel y, chamber a, of valve-box b, and channel 95 into the chimney. 7

If it is desired to reverse the valves, the crank is turned in the opposite direction to that shown by the arrow. When this is done, the valves d, d close first the respective orifices of channels y, y whereupon the "valves 0, c are reversed when the cords or ropes have become loose after the pin p has again caught the fork n, while when turning the crank it still further, the valves (1, d are again lifted until the crank is turned for almost 360, 1'. 6. has accomplished one full turn.

The example shown in Fig. 5provides further that also the supply of gas to the two chambers a a must always be closed before the movement of the valves 0, 0 can happen, so that during this movement the gas cannot escape through the channels as, x into the flue. For closing the gas supply pipe 2 is used the valve 0 which is disposed in the distributing pipe (1 and connected by a separate double-armed lever g with one cord or rope g so that this valve 0 is lifted at the same time as the valves d, d are lowered.

The cords or ropes for actuating the valves are made tight in the known manner in the top wall of the valve boxes b, b by an oil or water seal.

The balances h with the counterweights i have as object to balance in the best possible way the weight of the valves (1, (i whereby the turning of the crank in is so facilitated that it can be easily effected by hand.

Having 110w particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I declare that what 1 claim is:

1. A regulator for regenerator furnaces provided with :1 pair of gas chambers each having a gas inlet, a gas duct communicating with the furnace. a waste gas outlet, a first valve controlling the gas duct, :1 second valve controlling alternately the gas inlet and waste gas outlet, means for actuating the first valve, and means for actuating the second valve subsequent to the first. valve, substantially as specified,

2. A regulator for regenerator furnaces provided with a pair of gas chambers each having a gas inlet, a gas duct communicating with the furnace, a waste gas outlet, a first valve controlling the gas duct, a second valve controlling alternately the gas inlet and waste gas outlet, an oscillating disk, and separate means for operatively connecting said disk with said first and second valves, substantially as specified.

A regulator for regenerator furnaces provided with a, pair of gas chambers, a distributing pipe communicating with each of said chambers, an inlet valve and a pair of outlet valves for said pipe, and a pair of waste gas outlets controlled by said outlet valves, substantially as specified.

4. In a regulator for regenerator furnaces, a pair of gas chambers each having a gas inlet, a gas duct: communicating with the furnace and a waste gas outlet, combined with a pair of air chambers each having an air inlet, an air duct comnninicating with the furnace and a waste gas outlet, :1 first pair 01 valves controlling the gas and air ducts, a second pair of valves controlling alternately the gas and air inlets and the waste gas outlets, means for simultaneously actuating the first pair of valves, and means for simultaneously actuating the second pair of valves, substantially as specified.

Signed at Iliisseldort, (lei-many this t\\'ent v eighth day of June 1906.

IIIJRMANN GEWECKE. Witnesses as to signature of llermann (lewecke:

WAT/rm: SCHUMANN, E. SCHUMANN. 

